Jet Evolution in the Quark-Gluon Plasma from RHIC to the LHC
S. Domdey, B.Z. Kopeliovich, H.J. Pirner
TL;DR
This paper compares two models of jet quenching in quark-gluon plasma, using RHIC and LHC data to distinguish their predictions for high-energy hadron suppression and jet structure.
Contribution
It introduces and contrasts two scenarios for jet evolution in quark-gluon plasma, providing predictions for LHC based on RHIC data.
Findings
Different predictions for nuclear modification factor at LHC
Distinct parton distribution results inside jets for the two scenarios
Jet reconstruction tests can differentiate mechanisms of jet quenching
Abstract
The observed suppression of high- hadrons allows different explanations. We discuss two possible scenarios: In scenario 1, parton energy loss from scattering in the hot medium is complemented by final state interactions in the resonance matter. Scenario 2 has an enhanced transport parameter which is fitted to RHIC data. For LHC, the two scenarios lead to very different predictions for the nuclear modification factor of hadrons. In addition, jet reconstruction allows more specific tests of the mechanisms responsible for jet quenching. We calculate the distribution of partons inside a jet and find different results for the two scenarios.
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